Jane Lynch to guest star on 'The Simpsons'

Jane Lynch is to star in an upcoming episode of The Simpsons, it has been announced.

The Glee actress will play Roz, Homer's new personal assistant at the Nuclear Power Plant, in an episode next season called 'Replaceable You', reports Entertainment Weekly.

Executive producer Al Jean said: "This woman seems terrifically nice, but then it turns out she's just completely undermining him every step of the way and gets his job - until he can discover her one weakness with the help of Ned Flanders!"

Jean went on to praise Lynch - who recorded her lines last week - and expressed his surprise that the long-running Fox cartoon hadn't secured her vocal talents earlier.

He said: "She can do edge, sweetness and a mix of both - I'm just embarrassed we didn't ask her before she was so successful because she's funny in everything she does. We were very happy when she said yes."

Lynch's Glee co-stars Lea Michele, Cory Monteith and Amber Riley previously appeared on an episode of The Simpsons earlier this season.